Chisel type blade for carving tools



April 1953 P. H. EJNSINGER 2,634,775

CHISEL TYPE BLADE FOR CARVING TOOLS Filed July 5, 1947 IN VEN TOR.

Patented Apr. 14, 1953 CHISEL TYPE.- BLADE FOR. CARV-ING TOOLS;

Philip H. Unsinger; Fremont; Ohio, assi'gnor to Unsinger. AP"Corporation, Fremont} Ohio; 2-

corporation; of. Ohio Applicationolilly 1947, S'erIaIANoL'JSQJGB 2Claims;- Cl. 1451-4 4')'* This inventionrelatestocarvingtools and moreespecially to tools of: the gouge and corner chisel types for performinggrooving and carving operations in woodwork or similar materials; Theinvention embraces the provision of" carving toolsof the chisel typethat may be interchangeably inserted-in a suitable holder and which areespecially adapted for hobby-craft work; model building, and thelike.

The invention further embracesthe provision of a chisel or carving'toolformedof a singlestrip of metal which isconfigurated to provide a chan--nel-shaped operative portion and a shankportion for-med Witha rib actingas a reinforcement means Another object of'the invention is theprovision of carving tools formed with shank portions which areof ashape andsize to beused interchangeably with a holder, the-tools beingof a character that may be fashioned with various shapes of cuttingconfigurations for performing many kinds of grooving or carvingoperations.

A' further object ofthe invention resides in the provision of meansassociated with a carving'tool for deflecting or diverting the cuttingsaway from the holder.

Still anotherobject of the invention is theprovision of carving toolswhich may bemade and formed from sheet metal whereby the cost ofproducing the tools is reduced toaminimum.

Further objectsand advantages are within the scope of this inventionsuchas relate to the arrangement, operation: and function of the relatedelements'of the structure; to. various details of construction and tocombinations of parts, elements per se, and to economies.- ofmanufacture, and numerous other features. as. will be apparent from aconsideration of: the specification and, drawing of a form of theinvention, which may be preferred, in which:

Figure 1 is an isometric view-cf a formof tool holderadapted to supporttools made in accordance; with my invention;

Figure 2is a side elevational view illustrating one form of chisel orcarving tool of my invention;

Figure 3 isa top plan view of the carving tool shown in Figure 2;

Figure 4 is a front end view of the carving'tool illustrated in Figure2;

Figure'5 is a rear view of the carving-toolshow-n in Figure 2;

Figure 6 is an isometric-view illustrating another'iorm of carving toolof myinvention show ing' the'same positioned in the chuck of a:- toolholder;

Figure 7 is a front end, view of the. tool illustratedin Figure 6;

Figure 8 is an elevational view of thecarving tra-ting another formof"carving tool of my invention;

Figure 11' isavertical sectional viewitakem substantially ontheline il-41 ofFigure 1 0;

Figure 1' 2 a longitudinal sectional view show ing' a further form ofcarving-tool of my inven-- tion, and

Figure 1'3v is. a transverse sectionalview taken substantially ontheline l=3-| 3' of Figure 12.

While I have-illustrated-the forms ofmy invention as embodied in'chisels or gougesefor producing \fi-shaped or curved configurations incross section, it isto be understoodthat tools embodying the principlesof my" invention may be formed" in various: shapes toproduce other typesof" grooving without departing from" the spirit of the invention.

Referringrto the 1 drawings in: detail and first to Figure. l, I haveillustrated a holder--- adaptable. for supporting: the. tools of myinventiom The holdersis inclusive: of; a. body portion 1 0? adapted toslidably' receive: a button or: knob portion; I2;

The opposite end of thexbody I0: is: knurledt as: at-

I 4-, this end: of:theholder: being: provided with an:

interiorly: threaded bore: adapted. to receive: the, threaded portion:l6; of a: chuckimember lsl'. The v chuckimember; I l is :iorm'ed'lwithacentrally: distposed kerf'orslot: l8jforming-chuckjaws 24 an axialvbore: I 9; and; transversely disposed; recesses: 20, the latterbeingemployediorrtheereception' off other forms of tools than thoseherein disclosed.v Theichuck member III is provided:with'aatapered:orfrusto-conicall3tshapedLportioniZ. Abushing.

23- surrounds theintermediate portion of: the

chuck member I1: and; has anaout'wardly" flared interiorconfiguration.co-v-extensively' arranged Wi'E-hlthe: tapered portion 22 so thatxwhen:the; portion-: 15:. of the: chuck: member: is; threaded into: the borein: the; handle;- l0; thgfiared portion. of

bushing 23; cooperates with thevtaperedl portion:

is adapted to carve or cut V-shaped grooves? in":-

woodwork. In this form the body of the tool is of V-shaped cross sectionas indicated in Figure 4 and is sharpened to a cutting edge 26 by thetapered extremity 21. As particularly shown in Figures 2 and 5, thecarving tool is formed with a shank portion 28 provided with twouniplanar spaced sections 29 which are joined through a longitudinallyextendingrib or raised portion 30, the latter not only serving toreinforce the shank construction 28 but also functions as a positioningmeans when the tool is placed in the chuck I! of the holder. The bodyportion 25 of the tool and the shank portion 30 are joined togetherthrough an angularly disposed configuration 3| which blends the bodysection to the shank section asespecially shown in Figures 2 and 3. Thusthe rib formation 30 is, in eifect, a prolongation of the body sectionproviding a section having ample strength at the juncture of the shankand body portions.

Figures 6 and 7 illustrate a modified form of carving tool of the roundgouge type in which the body portion 34 is configurated to asubstantially semi-circular cutting edge 35 at one end and formed with ashank portion 31 at the other end portion. The shank portion 31 is of aconfiguration I substantially identical with that formed on the toolconstruction shown in Figures 2 and 3. The shank portion 31 is receivedin the jaws 24 of the tool holder as illustrated in Figure 6, theconstruction shown in Figures 2 through 5 inclusive being adapted to beheld in the jaws of the holder in the same manner. The rib or ridgeportion 39 is received into a longitudinally extending opening or recessi9 formed in' a jaw 24 of the chuck I1, and the rib and walls of suchrecess cooperate to properly position the gouge or carver in the toolholder and prevent lateral relative movement of the tool with respect tothe holder. When the chuck member I! is threaded into the handle portionll] of the tool holder, the chuck jaws 24 are urged toward one anotherinto engagement with the uniplanar portions 40 of the tool shank 31 toprevent vertical movement of the tool with respect to the holder.

I have found that in the use of carving tools or gouges with certaintypes of wood, the cuttings or chips tend to follow the concave orchanneled interior formation of the tool to the entrance of opening ISin the upper jaw 24 of the tool holding chuckand also tend to accumulateadjacent the chuck jaws. projection of chips or cuttings intothe recessin the upper jaw 24, or their accumulation adjacent the chuck jaws,means are provided for diverting the chips from the carving tool channeland away from the chuck jaws. As shown in Figure 8, this means is in theform of a rod or bar 43 preferably of circular cross section and taperedat its outer end as shown at 44 to provide a point or apex 45 adapted tolie in the bight or central portion of the channel of the toolconfiguration. The apex 45 terminates a short distance from theextremity of the body of the tool 25 as illustrated in Figure 8. In theuse of this arrangement, the cuttings or chips made by the cutting edgeof the tool will be diverted by the tapered portion 44 of the rod in adirection away from the chuck jaws 24.

As shown in Figure 9, the rod 43 may be utilized as an awl, prick punchor the like by inserting the same in a bushing or sleeve 41 of adimension to he received in the recesses l9 formed in the chuck iew M-M;

In order to avoid the Figures 10 and 11 illustrate a means integrallyformed in the tool configuration for diverting chips and cuttings awayfrom the tool supporting chuck. In this construction, the tool body 25'is formed adjacent its juncture with the shank 28 with an angularlydisposed or canted portion 49. The raised portion 49 is formed centrallyof the tool, as shown in Figure 11, and serves to deflect chips orcuttings upwardly or laterally and away from the chuck jaws of the toolholder.

Another modification of means for diverting chips or cuttings away fromthe holder is illustrated in Figures 12 and 13. In this form of tool, animpediment to the passage of the chips or cuttings is placed in thebight portion of the carving tool configuration 25". I have found thatthe deposition of a small amount of solder or other fiuxable metal oralloy 50 in the channel configuration provides a satisfactory means ofaccomplishing the desired result. In the use of this form of tool, thecuttings or chips, being moved along the interior of the channelconfiguration, engage the impediment or abutment j 50 and are deflectedupwardly or laterally so that they will not accumulate in or in front ofthe jaws of the tool holder. The composition comprising the abutment 50may be applied by the use of a suitable soldering or brazing fiux tocause it to adhere to the carving tool.

through the use of suitable forming dies so that the tools may be madein large quantities at a low cost.

While I have illustrated my invention as embodied in carving tools ofthe corner chisel and round gouge type, it is to be understood that myinvention may be embodied in tools of different cross sectionalconfiguration following the principles of construction of the presentinvention.

It is apparent that, within the scope of the invention, modificationsand different arrangements may be made other than is herein disclosed,and the present disclosure is illustrative merely, the inventioncomprehending all variations thereof.

What I claim is: I

1. A cutting tool comprising an elongated member formed of a singlestrip of sheet metal, said member being formed with a body portion, anintermediate portion and a shank portion, said body portion being ofnonuniplanar configuration in cross-section and angularly disposed withrespect to said mid-portion and having a mid section extending below theplane of its edges and the extremity of said body portion beingconfigured to present a cutting edge; said shank portion being formed ofa planar surface having a reinforcing ribrunning the full length of saidsurface and extending below the plane of said surface in a directionsimilar to that of said center section, said shank portion beingangularly disposed with respect to said intermediate portion and offsetWith respect to said body portion, said rib terminating at the angularjuncture of said shank and intermediate portion.

2. A cutting tool comprising an elongated member formed of a singlestrip of sheet metal having parallel lateral edges, said member beingformed with a body portion, an intermediate portion and a shank portion,said portions having as their lateral edges, the lateral edges of saidsingle strip of sheet metal, said body portion being of nonuniplanarconfiguration in cross-section and angularly disposed with respect tosaid mid-portion and having a mid-section extending below the plane ofits edges and the extremity of said body portion being configured topresent 5 a cutting edge; said shank portion being formed of a planarsurface having a reinforcing rib running the full length of said surfaceand extending below the plane of said surface in a direction similar tothat of said center section, said shank portion being angularly disposedwith respect to said intermediate portion and offset with respect tosaid body portion, said rib terminating at the angular juncture of saidshank and intermediate portion.

PHILIP H. UNSINGER.

6 References Cited in the file of this patent UNITED STATES PATENTSNumber 15 Number Name Date Parmelee Sept. 3, 1878 Glardon-Jacquet Apr.4, 1899 Hansson Dec. 9, 1902 McLeod May 3, 1904 Gonyea Sept. 25, 1906Payer Oct. 6, 1931 Grumbacher Aug. 6, 1935 Walker Dec. 31, 1935 BartolMay 26, 1936 FOREIGN PATENTS Country Date Norway June 15, 1923 GreatBritain Aug. 10, 1938

